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Alienware X51
Owner’s Manual
Regulatory model: D05S
Regulatory type: D05S001
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m / m a n u a l s
Contents
1
About Your Computer
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Front View .
Back View .
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Specifications .
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Before You Begin
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Turn Off Your Computer and
Connected Devices .
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Safety Instructions .
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Working Inside Your Computer
System Setup
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Overview .
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Entering System Setup .
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System Setup Screens .
System Setup Options
Boot Sequence . .
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Contents
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5
6
Flashing the BIOS
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19
Contacting Alienware
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21
Websites
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Contents
1
About Your Computer
Front View
1
2
7
6
5
3
4
1
3
5
7
power button
2
4
6
optical-drive eject button
rotatable AlienHead
optical drive
microphone connector
USB 2.0 connectors (2)
headphone connector
NOTE: Your Alienware X51 computer supports dual orientation. You can place your
computer vertically or horizontally. The rotatable AlienHead allows you to change
the direction of the AlienHead depending on the orientation of your computer.
About Your Computer
5
Back View
11
1
2
3
10
9
4
5
6
8
7
1
3
5
7
9
optical S/PDIF connector
USB 2.0 connectors (4)
audio connectors (6)
AC-adapter connector
security-cable slot
2
4
6
8
HDMI connector
USB 3.0 connectors (2)
hard-drive activity light
discrete graphics card
10 network connector and
network lights
11 coaxial S/PDIF connector
Specifications
For more information on specifications of your computer,
see support.dell.com/manuals.
6
About Your Computer
2
Before You Begin
Turn Off Your Computer and Connected Devices
CAUTION: To avoid losing data, save and close all open files and exit all open
programs before you turn off your computer.
1
2
Save and close all open files and exit all open programs.
Click Start
and click Shut Down.
Microsoft Windows shuts down and then the computer turns off.
NOTE: If you are using a different operating system, see the documentation
of your operating system for shut-down instructions.
3
4
5
Disconnect your computer and all attached devices from their
electrical outlets.
Disconnect all telephone cables, network cables, and attached devices
from your computer.
Press and hold the power button, while the computer is unplugged,
to ground the system board.
Safety Instructions
Use the following safety guidelines to protect your computer from potential
damage and ensure your personal safety.
WARNING: Before you begin, read the safety information that shipped with your
computer. For additional safety best practices information, see the Regulatory
Compliance Homepage at dell.com/regulatory_compliance.
CAUTION: To avoid damaging the computer, ensure that the work surface is flat
and clean.
CAUTION: Only a certified service technician is authorized to remove the
computer cover and access any of the components inside the computer. See the
safety instructions for complete information about safety precautions and
protecting against electrostatic discharge.
Before You Begin
7
CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab,
not on the cable itself. Some cables have connectors with locking tabs or
thumb-screws that you must disengage before disonnecting the cable. When
disconnecting cables, keep them evenly aligned to avoid bending any connector
pins. When connecting cables, ensure that the connectors and ports are correctly
oriented and aligned.
CAUTION: To disconnect a network cable, first unplug the cable from your
computer and then unplug the cable from the network device.
NOTE: Ensure that you remove the security cable from the security-cable slot,
if applicable.
8
Before You Begin
3
Working Inside Your Computer
CAUTION: Only a certified service technician is authorized to remove the
computer cover and access any of the components inside the computer. See the
safety instructions for complete information about safety precautions and
protecting against electrostatic discharge.
For information on removing and replacing the internal component of
your computer, contact Alienware. See "Contacting Alienware" on page 21.
Working Inside Your Computer
9
10
Working Inside Your Computer
4
System Setup
Overview
Use the system setup to:
•
get information about the hardware installed in your computer, such as the
amount of RAM, the size of the hard drive, and so on
•
•
change the system configuration information
set or change a user-selectable option, such as the user password, type of
hard drive installed, enabling or disabling base devices, and so on
NOTE: Before you change system setup, it is recommended that you note the
system-setup screen information for future reference.
Entering System Setup
1
2
During POST, when the DELL logo is displayed, watch for the F2 prompt
to appear and then press <F2> immediately.
NOTE: The F2 prompt indicates that the keyboard has initialized. This prompt
can appear very quickly, so you must watch for it, and then press <F2>. If you
press <F2> before the F2 prompt, this keystroke is lost. If you wait too long and
the operating system logo appears, continue to wait until you see the
Microsoft Windows desktop. Then, turn off your computer and try again.
See "Turn Off Your Computer and Connected Devices" on page 7.
System Setup
11
System Setup Screens
The system setup screen displays current or changeable configuration
information for your computer. Information on the screen is divided into
three areas: the setup item, active help screen, and key functions.
Setup Item — This field appears on
the left side of the system setup
window. The field is a scrollable list
containing features that define the
configuration of your computer,
including installed hardware, power
conservation, and security features.
Help Screen — This field appears on the
right side of the system setup window and
contains information about each option
listed in the Setup Item. In this field you
can view information about your computer
and make changes to your current settings.
Press the up-arrow and down-arrow keys to
highlight an option. Press <Enter> to
Scroll up and down the list with the
up- and down-arrow keys. As an option make that selection active and return to
is highlighted, the Help Screen
displays more information about that
option and available settings.
the Setup Item.
NOTE: Not all settings listed in the Setup
Item are changeable.
Key Functions — This field appears below the Help Screen and lists keys and their
functions within the active system setup field.
System Setup Options
NOTE: Depending on your computer and installed devices, the items listed in this
section may appear, or may not appear exactly as listed.
Main
BIOS Information
Product Information
Build Date
Displays the BIOS release date.
Product Name
BIOS Version
Set Service Tag
Asset Tag
Displays the product name.
Displays the BIOS version number.
Allows you to enter the service tag of your computer.
Displays the asset tag of the computer.
12
System Setup
Memory Information
Total Memory
Displays the total memory of the computer.
Memory Available Displays the amount of memory available on the
computer.
Memory Technology Displays the type of memory technology used.
Memory Speed
CPU Information
Processor ID
CPU Speed
Displays the memory speed.
Displays the processor identification code.
Displays the processor speed.
Cache L2
Displays the processor L2 cache size.
Displays the processor L3 cache size.
Cache L3
Advanced — Standard CMOS Features
System Date
(mm:dd:yy)
Displays current date.
System Time
(hh:mm:ss)
Displays the current time.
Device Information
SATA Port1
Displays the SATA 1 drive integrated in the
computer.
SATA Port2
SATA Port3
Displays the SATA 2 drive integrated in the
computer.
Displays the SATA 3 drive integrated in the
computer.
Wait for ‘F1’ If
Errors
If enabled, the system will HALT during boot to
display system errors.
Advanced — Advanced BIOS
Features
Bootup Num-Lock
Select power-on state for num-lock.
OptionROM Display
Screen
Allows you to display or hide the RAID Option ROM
screen during POST.
System Setup
13
Advanced — CPU Configuration
Hyper-threading
Technology
If disabled only one thread per enabled core is active.
XD Bit Capability
Enable XD Bit Capability to allow the processor to
distinguish between the bits of code that can be
executed and the ones that cannot be executed.
Intel(R) SpeedStep
tech
If enabled, the processor clock speed and core
voltage are adjusted dynamically based on the
processor load.
Intel(R) C-State tech Allows you to enable the number of cores in each
processor package. Options 1-5.
Advanced — Integrated
Devices
USB Controller
Allows you to enable or disable the integrated USB
controller.
HD Audio
Allows you to enable or disable the integrated audio
controller.
Onboard LAN
Controller
Allows you to enable or disable the onboard LAN
controller.
Launch PXE OpROM
Allows you to enable or disable the boot option for
legacy network devices.
PCH SATA
Configuration
SATA Mode
Displays the SATA mode.
Advanced — Power Management Setup
Suspend Mode
AC Recovery
Sets the energy-saving mode of the ACPI function.
Sets what action the computer takes when power is
restored.
Auto Power On
Allows the computer to start up at a certain time.
Allows you to set RTC Wake Up Date.
Allows you to set RTC Wake Up Hour.
Auto Power On Date
Auto Power On Hour
Auto Power On Minute Allows you to set RTC Wake Up Minute.
Auto Power On Second Allows you to set RTC Wake Up Second
14
System Setup
Security
Supervisor Password: Allows you to change the supervisor password.
User Password:
Allows you to change the user password. You cannot
use the user password to enter the BIOS setup,
during POST.
Set Supervisor
Password
Allows you to set a supervisor password.
Set User Password
Boot
Allows you to set a supervisor password.
Set Boot Priority
1st Boot Device
Displays the first boot device.
Default: USB floppy-drive.
2nd Boot Device
3rd Boot Device
4th Boot Device
5th Boot Device
6th Boot Device
7th Boot Device
Displays the second boot device.
Default: USB hard-drive.
Displays the third boot device.
Default: USB optical-drive.
Displays the fourth boot device.
Default: hard-drive.
Displays the fifth boot device.
Default: optical-drive.
Displays the sixth boot device.
Default: network boot.
Displays the seventh boot device.
Default: UEFI.
Hard Disk Drive BBS
Priorities
Sets the hard drive boot priority. The items displayed
are dynamically updated according to the hard drives
detected.
USB Disk BBS Drive
Priorities
Sets the USB drive boot priority.
CD/DVD ROM Drive BBS Sets the CD/DVD drive boot priority.
Priorities
System Setup
15
Exit
Provides options to Save Changes and Reset, Discard Changes
and Reset, and Restore Defaults.
Boot Sequence
This feature allows you to change the boot sequence for devices.
Boot Options
•
•
•
•
Diskette Drive — The computer attempts to boot from the floppy disk
drive. If no operating system is on the drive, the computer generates an
error message.
Hard Drive — The computer attempts to boot from the primary hard
drive. If no operating system is on the drive, the computer generates an
error message.
CD/DVD/CD-RW Drive — The computer attempts to boot from the
optical drive. If no disc is in the drive, or if the disc is not bootable,
the computer generates an error message.
USB Storage Device — Insert the memory device into a USB connector
and restart the computer. When F12 Boot Optionsappears in the
lower-right corner of the screen, press <F12>. The BIOS detects the
device and adds the USB flash option to the boot menu.
NOTE: To boot to a USB device, the device must be bootable. To ensure that
your device is bootable, check the device documentation.
•
Network — The computer attempts to boot from the network. If no
operating system is found on the network, the computer generates an
error message.
16
System Setup
Changing Boot Sequence for the Current Boot
You can use this feature to change the current boot sequence, for example,
to boot from the optical drive to run Dell Diagnostics from the Drivers and
Utilities disc. The previous boot sequence is restored at the next boot.
1
If you are booting from a USB device, connect the USB device to a
USB connector.
2
3
Turn on (or restart) your computer.
When F2 Setup, F12 Boot Options appears in the lower-right
corner of the screen, press <F12>.
NOTE: If you wait too long and the operating system logo appears, continue to wait
until you see the Microsoft Windows desktop. Then shut down your computer and
try again.
The Boot Device Menu appears, listing all available boot devices.
4
On the Boot Device Menu choose the device you want to boot from.
For example, if you are booting to a USB memory key, highlight USB
Storage Device and press <Enter>.
Changing Boot Sequence for Future Boots
1
2
Enter system setup. See "Entering System Setup" on page 11.
Use the arrow keys to highlight the Boot menu option and press <Enter>
to access the menu.
NOTE: Write down your current boot sequence in case you want to restore it.
Press the up- and down-arrow keys to move through the list of devices.
Press plus (+) or minus (–) to change the boot priority of the device.
3
4
System Setup
17
18
System Setup
5
Flashing the BIOS
The BIOS may require flashing when an update is available or when replacing
the system board. To flash the BIOS:
1
2
3
Turn on the computer.
Go to support.dell.com/support/downloads
.
Locate the BIOS update file for your computer:
NOTE: The Service Tag for your computer is located on a label at the back of
your computer.
If you have your computer’s Service Tag:
a
b
Click Enter a Tag.
Enter your computer’s Service Tag in the Enter a service tag: field,
click Go, and proceed to step 4.
If you do not have your computer’s Service Tag:
a
b
c
d
Click Select Model.
Select the type of product in the Select Your Product Family list.
Select the product brand in the Select Your Product Line list.
Select the product model number in the Select Your Product Model list.
NOTE: If you have selected a different model and want to start over again,
click Start Over on the top right of the menu.
e
Click Confirm.
4
5
A list of results appears on the screen. Click BIOS.
Click Download Now to download the latest BIOS file.
The File Download window appears.
6
7
Click Save to save the file on your desktop. The file downloads to your
desktop.
Click Close if the Download Complete window appears.
The file icon appears on your desktop and is titled the same as the
downloaded BIOS update file.
8
Double-click the file icon on the desktop and follow the instructions on
the screen.
Flashing the BIOS
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Flashing the BIOS
6
Contacting Alienware
NOTE: Dell provides several online and telephone-based support and service
options for your Alienware computer. These services may vary by country and
product and may not be available in your area.
To contact Dell for sales, technical support, or customer service issues:
1
2
3
4
5
Go to dell.com/contactdell.
Select your region, country, or language.
Select the segment for contact.
Select the appropriate service or support link based on your need.
Choose the method of contacting Dell that is convenient for you.
If you are in the United States, call 1-800-ALIENWARE for help on your
Alienware computer.
Websites
For the latest information, FAQ’s, and solutions to most common issues,
see support.dell.com/Alienware.
Contacting Alienware
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